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參數(shù)資料
| 型號： | CY2281 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 100-MHz PentiumII Clock Synthesizer/Driver with Spread Spectrum for Mobile or Desktop PCs(應用于移動或桌上型PC機并帶有寬頻譜的100MHz奔騰II時鐘合成器/驅動器) |
| 中文描述： | 100兆赫PentiumII時鐘合成器/驅動器，帶有擴頻移動或桌面電腦（應用于移動或桌上型電腦機并帶有寬頻譜的100MHz的奔騰二時鐘合成器/驅動器譜） |
| 文件頁數(shù)： | 2/9頁 |
| 文件大?。?/td> | 121K |
| 代理商： | CY2281 |
CY2281
PRELIMINARY
2
Pin Summary
Name
Pins
Description
V
DDPCI
V
DDREF
V
DDCPU
V
DDUSB
AV
DD
V
SS
XTALIN
[2]
XTALOUT
[2]
6, 9
3.3V Digital voltage supply for PCI clocks
27
3.3V Digital voltage supply for REF clocks
25
2.5V Digital voltage supply for CPU clocks
13
3.3V Digital voltage supply for USB clock
21
Analog voltage supply, 3.3V
3, 12, 14, 20, 22, 28
Ground
1
Reference crystal input
2
Reference crystal feedback
PCI_STOP
19
Active LOW control input to stop PCI clocks
CPU_STOP
18
Active LOW control input to stop CPU clocks
PWR_DWN
17
Active LOW control input to power down device
SEL
16
CPU frequency select input (-1 and -11S options only)
USBCLK
16
USB clock output, 48 MHz fixed (-2S option only)
SEL100
15
CPU frequency select input, selects between 100 MHz and 66.6 MHz
(see table below)
CPUCLK[0:1]
23, 24
CPU clock outputs
PCICLK[1:5]
5, 7, 8, 10, 11
PCI clock outputs, at one-half or one-third the CPU frequency of 66.6 MHz
or 100 MHz respectively
PCICLK_F
4
Free-running PCI clock output
REF
26
3.3V Reference clock output
Function Table
SEL100
SEL
[4]
CPU/PCI
Ratio
CPUCLK
PCICLK_F
PCICLK
USBCLK
[5]
REF
0
0
2
Hi-Z
Hi-Z
Hi-Z
0
1
2
66.66 MHz
33.33 MHz
48 MHz
14.318 MHz
TCLK
[3]
1
0
3
TCLK/2
TCLK/6
1
1
3
100 MHz
33.33 MHz
48 MHz
14.318 MHz
Notes:
2.
3.
4.
5.
For best accuracy, use a parallel-resonant crystal, C
LOAD
= 18 pF.
TCLK supplied on the XTALIN pin in Test Mode.
SEL available on options -1 and -11S only. SEL tied HIGH internally on option -2S
USBCLK available on option -2S only.
相關PDF資料 |
PDF描述 |
|---|---|
| CY2282-1 | 100-MHz PentiumII Clock Synthesizer/Driver with Spread Spectrum and USB for Desktop PCs(應用于桌上型PC機并帶有擴展頻譜和USB的100MHz奔騰II時鐘合成器/驅動器) |
| CY2282-11S | 100-MHz PentiumII Clock Synthesizer/Driver with Spread Spectrum and USB for Desktop PCs(應用于桌上型PC機并帶有擴展頻譜和USB的100MHz奔騰II時鐘合成器/驅動器) |
| CY2283 | PentiumII, K6, 6x86 100-MHz Clock Synthesizer/Driver for Desktop PCs with ALI or VIA Chipsets, AGP and 3 DIMMs(帶ALI或VIA芯片組，AGP和3DIMM應用于桌上型PC機的奔II，K6, 6x86 100MHz時鐘合成器/驅動器) |
| CY2285 | 100-MHz PentiumII Clock Synthesizer/Driver with Spread Spectrum for Mobile PCs(應用于移動PC機并帶有寬頻譜的100MHz奔騰II時鐘合成器/驅動器) |
| CY2292FIT | Three-PLL General-Purpose EPROM Programmable Clock Generator |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY2283 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:PentiumII, K6, 6x86 100-MHz Clock Synthesizer/Driver for Desktop PCs with ALI or VIA Chipsets, AGP and 3 DIMMs |
| CY2283PVC-1 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:PentiumII, K6, 6x86 100-MHz Clock Synthesizer/Driver for Desktop PCs with ALI or VIA Chipsets, AGP and 3 DIMMs |
| CY2283PVC-2 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:PentiumII, K6, 6x86 100-MHz Clock Synthesizer/Driver for Desktop PCs with ALI or VIA Chipsets, AGP and 3 DIMMs |
| CY2285 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:100-MHz Pentium㈢II Clock Synthesizer/Driver with Spread Spectrum for Mobile PCs |
| CY2285PVC-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
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